export function isLocalStorageAvailable() { try { return Boolean(window.localStorage); } catch (e) { return false; } } export function isSessionStorageAvailable() { try { return Boolean(window.sessionStorage); } catch (e) { return false; } } export function getLocalStorageSummary() { try { const count = window.localStorage.length; const estimatedSize = JSON.stringify(window.localStorage).length; return `${count} items; ${estimatedSize} bytes`; } catch (e) { return 'inaccessible'; } }